Presser-foot for hemstitch sewing-machines.



No. 776,821. PATENTED DEC. 6, 1904. C. M. ABERUROMBIE.

PRESSER FOOTPOR HEMSTITGH SEWING MACHINES.

' APPLIOATIQN FILED 0GT.31, 1901.

NO MODEL. I 2 SEEBTSBHEET '1.

m VENTOI? A TTOHNE Y No. 776,821. PATENTED DEC. 6, 19 04.,

. 0. M. ABEROROMBIE.

PRESSERPOOT FOR HBMSTITGH SEWING MACHINES.

APPLIOATION FILED 00T.31. 1901.

N0 MODEL 7 2S'HBET8SHEET 2.

WITNESSES; //v VENTOH A Wok/v5 r UNITED STATES Patented December 6, 19041.

PATENT OFFICE.

CHARLES MACKENZIE ABERCROMBIE, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO WHEELER & WILSON MANUFACTURING COMPANY, OF BRIDGEPORT, CONN ECTICUT, A CORPORATION OF CONNECTICUT.

PRESSElR-FOOT FOR HEMSTITCH SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 776,821, dated December 6, 1904. Application filed October 31, 190 l. fierial No. 80,684 (No model.)

T 0 (tZZ whom, it may concern:

Be it known that I, CHARLES MACKENZIE ABnRoRoMBIn, a citizen of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented a certain new and useful Improvement in Presser-Feet for Hemstitch Sewing-Machines, of which the following is a full, clear, and exact description. a

The object of this invention is to provide an attachment for sewing-machines for controlling hem-folds, as in the hemstitching of handkerchiefs or in the stitching down of hem-folds, as in the hemming of sheets, pillow-cases, &c., and in the seaming of hemfolds or materials wherein it is essential that the feed of the material to the needle shall be uniform, so as to prevent the fold from overlapping the finished end of the seam, which occurs in the employment of the ordinary cloth-pressers.

The invention consists of a compound or duplex presser-foot the members of which are capable of independently yielding to the work and are also capable of adjustment relatively to one another, all as I will proceed now more particularly to set forth and finally claim.

The particular class of Work for which my improved device is especially adapted is hemstitching, wherein several thicknesses or folds of material are passed beneath the feet at the same time, and I have accordingly illustrated my invention in connection with a hemstitch sewing-machine; but I do not wish to be limited in this respect, since such cloth-pressers are equally adapted to many other sewingmachines wherein the different thicknesses of material are simultaneously passed beneath the presser-feet and require that the latter as sume positions in different horizontal planes.

In the accompanying drawings, illustrating my invention, in the several figures of which like parts are similarly designated, Figure 1 is a front elevation of a hemstitch sewingmachine equipped with my improved clothpresser, the face-plate being removed. Fig.

2 is a front elevation of my improved clothpresser attached to a presser-bar. Fig. 3 is a side elevation of the cloth-presser looking in a direction opposite to that in which the cloth-presser is viewed in Fig. 1. Fig. 4: isa rear elevation of the cloth-presser and bar. Fig. 5 is a perspective view of the clothpresser and presser-bar. Fig. 6 is a perspective view of the presser detached from the presser-bar.

1 is the usual overhanging arm of the sewing-machine, mounted upon the bed-plate 2.

3 is the presser-bar, operatively mounted in the end of the overhanging arm and having the usual presser spring 4L, interposed between the lifting-collar 5 and pressure-adjusting sleeve 6.

To the lower end of the presser-bar 3 are adjustably secured the respective legs 7 and 8 and in such manner that one of said legs will be capable of limited vertical movements relatively to the vertical movements of its coacting leg. The leg? is supplied with a collar 9, having a set-screw 1O tapped therein, by means of which said leg is secured rigidly to the presser-bar. The leg 8 is supplied with two collars or short sleeves l1 and 12, fitted loosely on the presser-bar and adapted to receive the collar 9 between them. The distance between the two collars or sleeves 11 and 12 is somewhat greater than the thickness of the collar 9, so as to permit of vertical adjustments of the leg8 upon the presserbar 3.

13 is a collar secured upon the presser-bar 3 above the collar 11 by a set-screw 14, and interposed between the collars 11 and 13 is an auxiliary presser-spring 15, which exerts a tendency to thrust the leg 8 downward.

16 is an adjusting-screw tapped in the collar 11 and adapted to bear upon the collar 9, so that by the adjustment of said screw limited vertical movements of the leg 8 with respect to the leg 7 may be obtained, as will be clear by reference to Figs. 3 and 4. The collar 11 rearwardly from the threaded hole for the adjusting-screw 16 is split, as shown at 17.,

and the two sections thus formed are drawn l together by a screw 18, thus forming a pinchjoint whereby the adjusting-screw 16 is secured against unintentional adjustment.

In order to prevent the leg 8 from turning axially on the presser-ba-r and getting out of proper alinement with the leg 7, the body portion of said leg 8 is provided with angular portions 19 and 20, which angular portions coact with corresponding angular portions 21 and 22, formed in the leg 7, and this con struction while preventing axial movements permits vertical movements of the leg 8 relatively to the leg 7 The presser-bar is restrained against turning by the presser-lift-er collar 5 in the usual manner.

23 and 24 are presser-i'eet pivoted at the bottoms of the respective legs 7 and 8 in the usual manner.

The leg 8-is made somewhat longer than the leg 7, as is clearly shown in Figs. 2 and 1, and by adjusting the screw 16 the distance which the foot 24 depends beneath the foot 23 may be regulated to meet the requirements of different thicknesses and texture, a great desideratum in this class of work.

When the presser-bar is lowered tov bring the presser-feet upon the material, the foot 24'will first contact with the material, thus compressing the spring 15 by the more powerful action of the spring L until the foot 23 rests firmly upon the material. The pressure with which the foot 23 bears upon the material may be regulated by adjusting the collar 13 to put more or less tension upon the spring 15 independent of the pressure exerted by the spring 1.

date the action of the needle.

hat I claim is- 1. The combination with a presser-bar, of two presser-feet independently and adjustably secured to said presser-bar, a spring on said bar whereby said presser-feet have vertical movements in common, and a second spring. adjustably secured upon said presserbar for independently controlling the action of one of the presser-i'eet relatively to the thickness of the material being sewed.

2. A sewing-machine presser-foot, comprising a spring-pressed leg and a foot thereon, said leg having a collar and means for adjusting it upon a support, another leglikewise having a foot, and provided with parallel collars, and means for securing said leg to said support with the collar of the firstnamed leg interposed between the collars of the last-named leg, substantially as described.

3. Asewing-machine presser-foot, of compound or duplex formation, comprising two legs, one of said legs having parallel collars, and means to secure the same upon a presserbar, and the other leg having a collar adapted to engage the presser-bar between the collars of the first-named leg and havinga capability of adjustment between said collars and upon said presser-bar, aspring mounted upon the presser-bar above the uppermost collar, a stop-collar upon the presser-bar, means to adjust said stop-collar to vary the tension or the said spring, and a set-screw in the uppermost collar for limiting the vertical movements of the leg having the parallel collars, combined with a presser-bar.

In testimony whereof I have hereunto set my hand this 30th day of October, A. D. 1901.

CHARLES MACKENZIE ABERCROMBIE.

YVitnesses:

ABBIE A. DONIHU, F. WV. OSTROM. 

